Glen Head Water Filtration Building Case Study

November 29, 2021

Project Specs:

Location: Glen Head, NY
Certified Installer: FSR
Engineer of Record (EOR): D&M Engineers & Architects
Perimeter Helical Pile Specifications:
- 27 MacLean Power Systems (MPS) Helical Piles
- D7 (1.5” Round Corner Square) Leads w/ 10”, 12”, 14” Dia. Helices on a 7’ shaft & P28 (2.875” x 0.203” Pipe Shaft) Extensions
- Average Depth of Helical Piles: 14’
- Minimum Req’d Installation Torque of Perimeter Helical Piles: 4,800 ft-lbs
Interior Helical Pile Specifications:
- 28 MacLean Power Systems Helical Piles
- P35H (3.50” x 0.300” Pipe) Leads w/ 10”, 12”, 14” Dia. Helices on a 7’ shaft & P35H Pipe Shaft Extensions
- Average Depth of Helical Piles: 19’
- Minimum Req’d Installation Torque of Interior Helical Piles: 10,300 ft-lbs
Ultimate Load(s):
- Perimeter: 45 kips (Compression)
- Interior: 75 kips (Compression)

The hamlet of Glen Head hired D&M Engineers and Architects to design a new water filtration building for their residents. Due to the poor soil conditions on site, the EOR chose helical piles to support the foundation of this new water filtration building. FSR was contracted to install a total of 55 helical piles on site. Despite the large number of underground utilities in on site, FSR successfully installed all 55 MPS helical piles in only two working days.